Heat treating machine



July 26, 1932. g 'LE ET AL 1,868,812

HEAT TREATING MACHINE Filed Jan. 16. 1951 2 Sheets-Sheet l .H# /7 3 20 /9 mm M i 35 5 I ZZ..// /4- o I-Zf A gmntoz r 8% Y Z I 5mm July 26, 1932. J. BEHLE ET AL 1,868,812

HEAT TREATING MACHINE Filed Jan. 16. 1931 2 Sheets-Sheet 2 15% gg 1.! I WEWETE a in .7?! 6 v j?! 7 awe Patented July 26, 1932 UNITED 1rArE rio FmE,

Josey]; 'BEHLE Nncnarsr I-iin 'g qnmtrmtms, 'rnxAs ASSIGNORS TO r m MURRAY commmr, onn rmismnrg s A: conrona rron or 'rExAs nmfr ram-rind nacnr'm: I

r Application niedfxanuar 16, 1931.- SeriaIIfNoc 509,115

.This invention relates to new and useful improvements in heat treating machines. 4

nc object of the-invention isto provide azmachine for automaticallyheating gin ribs and similar articles; '7

A further object of theinventionuis to provide a machine for heating an isolated or restricted portion of the riband particularly fo1*:concentrating the heating flame on said restricted portion. n a 1; -47

- Another object of the invention is; to provide a machine for progressively heating a restricted'secti'on of a-gin"rib,' whereby a rib may be fedtothe machine-heated and discharged therefrom, and .a plurality of ribs heated successively, thus making for a continuous-operation. 1 x i a T A still further object of the inventionis to provide means for automatically progressing the ribs, whereby the duration of the heating period over each flame is automatically controlled.

A construction designed-to carry out invention will be hereinafter described together with other features of'the invention;

- Theinvention will be more readilyunderis a verticalsectional view of the Figure- 7 is a vertical sectional view taken on the 'line 7+7 of Fi 1 J In the drawings the numeral designates the'jvertical front plate of asupport- 'ing structure or frame. The platehas'ajforthe front wall of a vertical gearing case 13 wardly extending base;11" from which inclined braces 12 rise to the top of :the'plate. The plate is spaced from and connected to by bridle'bars 1 19+ "A drive-shaft 15 extends through thefront wall of the case and hasfastened thereon a drivesprocket 16; 'An endless sprocket chain 17 travels, around this .sprocket and also. around an idler sprocket 18 mounted on said wall at the oppositeendof the case." This chain 17 \will becalled the upper chain. 7

A vdriven shaft 19 :also extends through the =frfont wall :of the case13; below the shaft 15 i on agbox 2t'aItthe-opposite end of the front iflheupper sprocketfchain 17 hascarriers "25;attachedto its links (Figure 5) Y and each shapedto, receive theupper end of a gin rib, iwhile, the, lower chain 22 is provided with sockets 26 each s'haped ,to snugly receive the lower end or foot of a gin rib (F igure 4). v A. hanger 2.7; is:spaced;from.the gearrcasetlii in front of the upper sprocket chain 17 and supported by-studs 28 and an end bracket 29 secured to the end ofthe case 13.; Burner -tubesj30are mounted the bracket and provid ed with tips 31 at their upperends. These burner tubesare heldin; position near their lower ends by, a;sp.acerbar, 32: and reach is .connectedito a Y-ccoupling'33 below the bar.v

.1 :Algas feed pipe 34is attachedto one 1c of the Y'-.couplingiandan air pipe35 is attac ed 'to' the otherileg of the Y-couplingandthese pipes; include suitable control valves. -gaswpipe 34-,isconne'cted with a gassupply manifold 36 which is connected at one end with agas supply pipe37 .1 The pipes 35are connected with anrair manifold 38 which is suppliedwith compressed air from a suitable source through a pipe 39.1 i

A proper; mixture is supplied ing- .a: narrow vertical flame above each tip 131.2 This flame is veryirnportant and may be. of the needle type so as to' restrict its activearea; --The gin ribs'A :are placed in the carriers'25 and 26,as is'shown in F igures'1-,2 and 3 and these-carriers areso spaced as'to positioneach rib directly over one of the tips. Each gin rib is formed with awear The boss B and when the ribs are assembled in the gin these bosses are located between the saws at the points where the lint passes through so as to compensate the abrasion at this point. The flames are concentrated on these bosses and the heat thus concentrated thereon. \Vhile the adjacent portion of the rib will be heated by conductivity the application of direct heat is limited to the boss.

We have shown six burner tubes and means which will be hereinafter described is provided for periodically propelling the chains so that the ribs are progressively heated and by the time a rib reaches the last burner to the right (Figure 3), it will have been heated to the proper degree and will be ready for quenching, which may be done in a suitable vat in any convenient manner. Adjacent the sprocket 23 is mounted an ejector 40. This ejector may be supported on the box 24: on which the sprocket 23 is loosely mounted.

The ejector has a curved shoe 11 at its upper end so shaped and so located as to dislodge the lower end of the gin rib from the carrier 26. An ejector shoe 42 is formed on the upper end of the bracket 29 and so located as to be engaged by the upper portion of the rib when the lower portion engages the shoe 4:1. These ejector shoes will dislodge the ribs from the carriers as they start downward around the sprockets 18- and 23. The discharged ribs may be caught in any suitable way; The ribs are fed to the machine by placing them in the carriers 25 and 26 at the left hand end (Figure 3) of said machine.

Above the burner tips 31 and also above the ribs, we provide a heat deflector43 formed of fire clay or any equivalent material and having a dome 44 immediately over each tip. The deflector is mounted in a hanger 45 suspended from brackets 46 mounted on the gear case 13. The domes 44 will tend to deflect the heat from the flames downward on top '23 and a similar guard 48 is mounted under the top of the chain 17 on the front of the case 13. The vertical face of the hanger 27 is provided with a facing 27 of sheet asbestos, or other fire-resisting material.

In the gear casing 13 an electric motor 50 is mounted on a shelf 49 and has a gear 51 mounted on its shaft. This gear drives a second gear 52 mounted on a shaft 53 journaled in the gear case. A cam 54 isfastened on the shaft 53 and a tripping lever 55 has a roller 56 (Figures 6 and 7) travelling on the periphery of the cam. The lever 55 is pivoted on a shaft 57 and has one end. attached to a coiled spring 58 which surrounds said shaft and has its opposite end attached to a collar 59 fixed on said shaft. The spring is coiled so as to exert a tension and constantly hold the roller 56 in engagement with the cam.

On its opposite end the leved has a springpressed pawl 60 adapted to engage the teeth of a ratchet 61, which is fastened on the shaft 15 of the upper sprocket 16. A pinion 62 is also fastened on this shaft and drives a pinion 63 fastened on the shaft 19 by means of an intermediate pinion 64 mounted on a stub shaft 65. The pinions 62, 63 and Marc of the same diameter and consequently the shaft 19 will be driven in the same direction and at the same rate of speed as the shaft 19.

The teeth of the ratchet 61 are so spaced that upon each operation of said ratchet the sprocket chains will. bev moved a sufficient distance to step each carrier from its position over one burner to a position directly over the next burner- WVhile the roller 56 is traveling on the concentric face of the cam 54 the lever 55 and consequently the chains, will be at rest, and this will be the heating period. hen the roller dips into the crotch of the cam the lever 55 will be swung, whereby the pawl will be lifted. and engaged with the next tooth. Thus, when the; roller rides out of the crotch the lever will be swung thus advancing the ratchet 61 and propelling the chain. It is obvious that changes. could. be

made in the timing mechanism and the pro pelling mechanism.

Various changes in the size and shape of the different parts, as well as modifications and alterations, may be made within the scope of the appended claims.

I aving illustrated and described a preferred form of the invention, what we claim, is:

1. In a heat treating machine, a frame, a

pair of endless chains journaled in the frame in spaced substantially parallel order, carriers mounted on the chains for receiving the ends of elongated metal articles, vertical burners, means for supporting the burners in spaced order between. the chains and substantially parallel thereto, means for imparting a step by step movement to the chains in unison, means for disengaging, the articles from the carriers, and a deflector mounted. above the burners.

2. In a machine for heat treating the wear bosses of gin. ribs, a plurality of burners successively arranged and each having means for producing an elongated vertical. needlelike flame, and a conveyor having means for carrying a plurality of ribs spaced in corresponding order to the burners for positioning the wear boss of each rib directly over and .at a substantial distance above one of the burners, whereby all of the. rib bosses are positioned over burners at the same time and for producing an elongated vertical needlelike flame, a conveyor having carrying elements for supporting gin ribs in an upright position and spaced so that the wear bosses of the ribs will be located directly over the burners when said conveyor is stopped, and means for intermittently operating the conveyor.

4. In a machine for heat treating the wear bosses of gin ribs, a supporting structure, a pair of spaced endless chains movably mounted on said structure, one of said chains being at a higher elevation than the other, a plurality of burners mounted between the chains and longitudinally thereof, said burners having means for producing alongated vertical needle-like flames, means on the chains for supporting gin ribs in upright positions with their Wear bosses directly over said burners, means on the structure for operating said chains, and means for deflecting the heat from the burners down onto the wear bosses of the ribs. V

In testimony whereof we affix our signatures.

JOSEPH BEHLE. CHRISTIAN W. HODD E. 

